Simple Machines

1. strength or power exerted upon an object; physical coercion; violence:
3. the point on which a lever rests or is supported and on which it pivots.
9. variable a variable (often denoted by y ) whose value depends on that of another.
10. variable a variable (often denoted by x ) whose variation does not depend on that of another.
11. the secondary or vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.
12. force the force which an effort force must overcome in order to do work on an object with a simple machine
15. amount of energy necessary to move an object.

2. machine A machine consisting of two or more simple machines operating together
4. the system of rules that a country or community recognizes as regulating the actions of its members and may enforce by the imposition of penalties.
5. a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
6. advantage the ratio of the output force produced by a machine to the applied input force
7. a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
8. the principal or horizontal axis of a system of coordinates, points along which have a value of zero for all other coordinates.
13. force the force used to move an object over a distance
14. machine any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.